linux-kernel - [PATCH for-next 27/32] scsi: qlogicpti: Replace spin_lock_irqsave with spin

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Message-ID: <1612697823-8073-28-git-send-email-tanxiaofei@huawei.com>
Date:   Sun, 7 Feb 2021 19:36:58 +0800
From:   Xiaofei Tan <tanxiaofei@...wei.com>
To:     <jejb@...ux.ibm.com>, <martin.petersen@...cle.com>
CC:     <linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linuxarm@...neuler.org>, Xiaofei Tan <tanxiaofei@...wei.com>
Subject: [PATCH for-next 27/32] scsi: qlogicpti: Replace spin_lock_irqsave with spin_lock in hard IRQ

It is redundant to do irqsave and irqrestore in hardIRQ context, where
it has been in a irq-disabled context.

Signed-off-by: Xiaofei Tan <tanxiaofei@...wei.com>
---
 drivers/scsi/qlogicpti.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/qlogicpti.c b/drivers/scsi/qlogicpti.c
index d84e218..078555e 100644
--- a/drivers/scsi/qlogicpti.c
+++ b/drivers/scsi/qlogicpti.c
@@ -1203,10 +1203,9 @@ static struct scsi_cmnd *qlogicpti_intr_handler(struct qlogicpti *qpti)
 static irqreturn_t qpti_intr(int irq, void *dev_id)
 {
 	struct qlogicpti *qpti = dev_id;
-	unsigned long flags;
 	struct scsi_cmnd *dq;
 
-	spin_lock_irqsave(qpti->qhost->host_lock, flags);
+	spin_lock(qpti->qhost->host_lock);
 	dq = qlogicpti_intr_handler(qpti);
 
 	if (dq != NULL) {
@@ -1218,7 +1217,7 @@ static irqreturn_t qpti_intr(int irq, void *dev_id)
 			dq = next;
 		} while (dq != NULL);
 	}
-	spin_unlock_irqrestore(qpti->qhost->host_lock, flags);
+	spin_unlock(qpti->qhost->host_lock);
 
 	return IRQ_HANDLED;
 }
-- 
2.8.1